Compare 2/40 and 28/21
1st number: 2/40, 2nd number: 1 7/21
2/40 is smaller than 28/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
2/40 = 2 × 21/40 × 21 = 42/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
28/21 = 28 × 40/21 × 40 = 1120/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/840 < 1120/840 or 2/40 < 28/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40 and 28/21 2/40 and 56/21 2/80 and 28/21 2/40 and 28/42 6/40 and 28/21 2/40 and 84/21 2/40 and 28/63 10/40 and 28/21 14/40 and 28/21